Oct  3 04:00:02 ssjiang CRON[3561958]: pam_unix(cron:session): session closed for user www-data
Oct  3 04:00:02 ssjiang CRON[3561956]: pam_unix(cron:session): session closed for user root
Oct  3 04:01:01 ssjiang CRON[3600691]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  3 04:01:01 ssjiang CRON[3600692]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  3 04:01:02 ssjiang CRON[3600691]: pam_unix(cron:session): session closed for user www-data
Oct  3 04:01:03 ssjiang CRON[3600692]: pam_unix(cron:session): session closed for user root
Oct  3 04:01:04 ssjiang CRON[3561957]: pam_unix(cron:session): session closed for user root
Oct  3 04:02:01 ssjiang CRON[3601595]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  3 04:02:02 ssjiang CRON[3601595]: pam_unix(cron:session): session closed for user www-data
Oct  3 04:03:01 ssjiang CRON[3601608]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  3 04:03:02 ssjiang CRON[3601608]: pam_unix(cron:session): session closed for user www-data
Oct  3 04:04:01 ssjiang CRON[3601617]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  3 04:04:01 ssjiang CRON[3601617]: pam_unix(cron:session): session closed for user www-data
Oct  3 04:05:01 ssjiang CRON[3601628]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  3 04:05:02 ssjiang CRON[3601627]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  3 04:05:02 ssjiang CRON[3601629]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  3 04:05:02 ssjiang CRON[3601629]: pam_unix(cron:session): session closed for user root
Oct  3 04:05:02 ssjiang CRON[3601628]: pam_unix(cron:session): session closed for user www-data
Oct  3 04:06:01 ssjiang CRON[3639590]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  3 04:06:02 ssjiang CRON[3639590]: pam_unix(cron:session): session closed for user www-data
Oct  3 04:06:07 ssjiang CRON[3601627]: pam_unix(cron:session): session closed for user root
Oct  3 04:07:01 ssjiang CRON[3641053]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  3 04:07:01 ssjiang CRON[3641053]: pam_unix(cron:session): session closed for user www-data
Oct  3 04:08:02 ssjiang CRON[3641063]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  3 04:08:02 ssjiang CRON[3641063]: pam_unix(cron:session): session closed for user www-data
Oct  3 04:09:01 ssjiang CRON[3641143]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  3 04:09:01 ssjiang CRON[3641144]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  3 04:09:01 ssjiang CRON[3641143]: pam_unix(cron:session): session closed for user root
Oct  3 04:09:02 ssjiang CRON[3641144]: pam_unix(cron:session): session closed for user www-data
Oct  3 04:10:01 ssjiang CRON[3641154]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  3 04:10:01 ssjiang CRON[3641157]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  3 04:10:01 ssjiang CRON[3641157]: pam_unix(cron:session): session closed for user root
Oct  3 04:10:01 ssjiang CRON[3641155]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  3 04:10:01 ssjiang CRON[3641156]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  3 04:10:02 ssjiang CRON[3641156]: pam_unix(cron:session): session closed for user www-data